ON THE CHARACTERIZABILITY OF SOME FAMILIES OF FINITE GROUP OF LIE TYPE BY ORDERS AND VANISHING ELEMENT ORDERS

Majedeh Pasdar, Ali Iranmanesh

DOI Number
https://doi.org/10.22190/FUMI1903573P
First page
573
Last page
582

Abstract


In this paper, we show that the following simple groups are uniquely determined by their orders and vanishing element orders: Ap-1(2), where p ̸= 3, 2Dp+1(2),
where p ≥ 5, p ̸= 2m - 1, Ap(2), Cp(2), Dp(2), Dp+1(2) which for all of them p is an
odd prime and 2p - 1 is a Mersenne prime. Also, 2Dn(2) where 2n-1 + 1 is a Fermat
prime and n > 3, 2Dn(2) and Cn(2) where 2n + 1 is a Fermat prime. Then we give an
almost general result to recognize the non-solvability of finite group H by an anology
between orders and vanishing elemen orders of H and a finite simple group of Lie type.


Keywords

Finite simple groups, vanishing element orders, prime graph.

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DOI: https://doi.org/10.22190/FUMI1903573P

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